Answer:
T=56.77s
Step-by-step explanation:
We must use the formula for centripetal acceleration:

We know the radius r and we want is to obtain a centripetal acceleration equal to g. Since velocity is distance over time, on this circle we can take distance as the circumference (which is of value
) and thus the time will be the period T because that's the time a point takes to travel the whole circumference, so we can write:

or:

and since we want the period:

which for our values is:
